- References
The Grenville Front Tectonic Zone is a geological feature in Eastern Canada that separates the Superior craton from rocks of the Grenville orogeny. It is a large tectonic zone of the Canadian Shield, extending from the northern shore of Lake Huron through Ontario and Quebec to Labrador, a distance of about {{Convert|1900|km|mi|abbr=on}}.[1] References1. ^The Grenville front tectonic zone: Results from the 1986 Great Lakes onshore seismic wide-angle reflection and refraction experiment
{{Canada-geology-stub}} 3 : Geology of Ontario|Geology of Quebec|Geology of Newfoundland and Labrador |